Datasheet

Document Number: 001-89638 Rev. *G Page 8 of 34
PSoC
®
4: PSoC 4000 Family
Datasheet
Descriptions of the Pin functions are as follows:
VDD: Power supply for both analog and digital sections.
VDDIO: Where available, this pin provides a separate voltage domain (see the Power section for details).
VSS: Ground pin.
VCCD: Regulated digital supply (1.8 V ±5%).
Pins belonging to Ports 0, 1, and 2 can all be used as CSD sense or shield pins connected to AMUXBUS A or B. They can also be used as GPIO pins that can be driven by
the firmware, in addition to their alternate functions listed in the Ta b l e 1.
Pins on Port 3 can be used as GPIO, in addition to their alternate functions listed above.
The following packages are provided: 28-pin SSOP, 24-pin QFN, 16-pin QFN, 16-pin SOIC, and 8-pin SOIC.
11 VSS
12 No Connect (NC)
[2]
13 P1.7/MATCH/EXT_
CLK
19 P1.7/MATCH/EXT_
CLK
13 P1.7/MATCH/EXT_
CLK
15 P1.7/MATCH/EXT_
CLK
MATCH: Match Out External Clock
14 P2.0 20 P2.0 16 P2.0
15 VSS
16 P3.0/SDA/SWD_IO 21 P3.0/SDA/SWD_IO 14 P3.0/SDA/SWD_IO 1 P3.0/SDA/SWD_IO 8 P3.0/SDA/SWD_IO I2C Data, SWD I/O
17 P3.1/SCL/SWD_CL
K
22 P3.1/SCL/SWD_CL
K
15 P3.1/SCL/SWD_CL
K
2 P3.1/SCL/SWD_CL
K
1 P3.1/SCL/SWD_CL
K
I2C Clock, SWD
Clock
18 P3.2 23 P3.2 16 P3.2 OUT0:PWM OUT 0
19 XRES 24 XRES XRES: External
Reset
Table 1. Pin Descriptions (continued)
28-Pin SSOP 24-Pin QFN 16-Pin QFN 16-Pin SOIC 8-Pin SOIC
Pin Name Pin Name Pin Name Pin Name Pin Name TCPWM Signals Alternate Functions
Note
2. This pin is not to be used; it must be left floating.